package com.xz.demo.domain;

/**
 * @author 张志航     
 * @version V1.0.0
 * @projectName design_mode
 * @title     Product   
 * @package    com.xz.demo.domain  
 * @date   2019/11/26 18:40  
 * @explain 抽象产品类
 */
public abstract class Product {

    public abstract void sayHello();


}
